M4.2 earthquake 43 km ESE of ?hara, Japan
A magnitude 4.2 earthquake struck 43 km ESE of ?hara, Japan on Tue, Feb 6, 1973, 5:31 AM JST (20:31 UTC), 49 km (30 mi) below the surface.
A larger quake followed: M4.4 121 km SE of ?hara, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1973-02-05 20:31:04 UTC
- Depth
- 49.0 km (30.4 mi), shallow
- Epicenter
- 35.096° N, 140.834° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 13 in the 30 days before it.
After
- 4.060 km E of ?hara, Japan · 19587 days ago · 20 km deep · 22 km away
- 4.162 km ESE of Katsuura, Japan · 19587 days ago · 34 km deep · 27 km away
- 3.96 km NNW of Yotsukaid?, Japan · 19579 days ago · 68 km deep · 93 km away
- 4.2131 km SE of Katsuura, Japan · 19566 days ago · 60 km deep · 92 km away
- 4.041 km ESE of ?hara, Japan · 19562 days ago · 53 km deep · 2 km away
- 4.4121 km SE of ?hara, Japan · 19558 days ago · 63 km deep · 79 km away
- 4.1113 km ESE of Katsuura, Japan · 19557 days ago · 68 km deep · 74 km away
- 4.2134 km SE of Katsuura, Japan · 19539 days ago · 58 km deep · 99 km away
- 5.011 km N of Kisarazu, Japan · 19538 days ago · 64 km deep · 94 km away
Before
- 3.953 km SSE of Hasaki, Japan · 19587 days ago · 22 km deep · 26 km away
- 4.353 km ESE of ?hara, Japan · 19587 days ago · 43 km deep · 11 km away
- 4.689 km ESE of ?hara, Japan · 19588 days ago · 33 km deep · 46 km away
- 4.189 km SE of Tateyama, Japan · 19589 days ago · 42 km deep · 94 km away
- 4.351 km E of ?hara, Japan · 19589 days ago · 31 km deep · 13 km away
- 3.850 km ESE of ?hara, Japan · 19596 days ago · 42 km deep · 7 km away
- 4.350 km SE of ?hara, Japan · 19597 days ago · 44 km deep · 12 km away
- 4.960 km ESE of Katsuura, Japan · 19603 days ago · 33 km deep · 26 km away
- 5.064 km ESE of Katsuura, Japan · 19603 days ago · 20 km deep · 26 km away
- 4.656 km ESE of ?hara, Japan · 19603 days ago · 25 km deep · 15 km away
- 5.052 km SE of ?hara, Japan · 19603 days ago · 43 km deep · 16 km away
- 4.540 km ESE of Katsuura, Japan · 19603 days ago · 56 km deep · 18 km away
- 4.852 km SE of Katsuura, Japan · 19604 days ago · 47 km deep · 24 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00000dk. Read Tue, Sep 22, 2026, 8:25 PM UTC.